package cn.cimoc.util;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import java.security.MessageDigest;

/**
 * @author LGZ
 * @date 2021/11/20 22:53
 * <p>
 * MD5工具类
 */
@Component
public class MD5Utils {

    private static String salt;

    @Value("${md5.salt}")
    public void setSalt(String salt) {
        MD5Utils.salt = salt;
    }

    public static String encode(String password) {
        password = password + salt;
        MessageDigest md5 = null;
        try {
            md5 = MessageDigest.getInstance("MD5");
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        char[] charArray = password.toCharArray();
        byte[] byteArray = new byte[charArray.length];

        for (int i = 0; i < charArray.length; i++) {
            byteArray[i] = (byte) charArray[i];
        }
        byte[] md5Bytes = md5.digest(byteArray);
        StringBuffer hexValue = new StringBuffer();
        for (int i = 0; i < md5Bytes.length; i++) {
            int val = ((int) md5Bytes[i]) & 0xff;
            if (val < 16) {
                hexValue.append("0");
            }
            hexValue.append(Integer.toHexString(val));
        }
        return hexValue.toString();
    }

}
